Improvement in reversible knob-latches



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WALLACE T. MNGER, OF NEW BRITAIN, GONNEGTICUT, ASSIGNOR TO I. & F.OORBIN, OF SAME PLACE.

Letters Patent No. 113,909, dated April 1s, 1871.

The Schedule referred to in these Letters Patent and making part of thelama.

To all whom 'it may concern 4 Be it known that I, WALLACE T. MUNGEB, of

'New Britain, inthe county of Hartford and State of Connecticut, haveinvented and made a certain new and useful Improvement iuLocks; and thefollowing ishereby declared to be a full and correct descriptionthereof.

My invention relates to that class of locks or latches in which thelatch is operated by the knob, and is capable of being reversed tochange it to a right or lefthand lock. p

I make use of a swinging arm moving upon a pin 0r stud on thesaddle-plate of the lock or latch, and provided with a projection uponits outer cud to take against the head upon the inner cud of thelatch-shank, and thereby keep said latch in its proper positionrelatively to the saddle-plate so that the two will move together whenthe knob is turned, or, when said arm yis raised so that the projectionis clear of the latchhead, allow the latch to` m'ove forward sniicientlyout of the lock-case so that it can b e reversed to change theinclination of the head of the latch and make it a Vright or left-handlock or latch.

I provide a spring to keep the swinging arm in its correct position, andso support the latch-bolt that it will always be kept in its correcthorizontal position.

In the drawing- Figure 1 is an elevation of a lock with my improvementapplied thereto, the cap-plate being removed and the parts in theirnormal position; l

Figure 2 is t similar view, with the parts in position to allow di' thelatch being reversed; and

Figure 3 is an elevation of the cap-plate of the lock a represents thecase ofthe look;

b, the bolt; andV c, the tumbler, to be operated by a key of any de sredcharacter. l

The latch-holt is also of usual character, and is formed 'with thebeveled head (l, cylindrical part e, shank f, and head g, and isprovided with the spring h by which it is projected, said sp1-ing actingbetween. the cylindrical part c and the plate e'.

tis the hub for the knob-spindle, and said hub is formed with the camsIt It toact against the studs Z Z/ l upon the saddle-plate m, and movesaid saddle-plate and latch when the knob and spindle are turned.

o is the swinging arm, pivoted at p upon the saddleplate m, and formedwith the projecting stop q to take against the head y of the latch-,boltand keep said said plate fm and latch-bolt, when iu the position shownin iig. 1, will move together.

ais a spring to keep the arm o in its proper position; and at n Iprovide a projecting toe upon the saddle-plate m for the head g to restupon, so that the spring rand arm o cannot move the latch-bolt from itscorrect horizontal position, and th'us prevent or against the stops t.

In the cap-plate u I provide au opening, fo, to allow for the arm ovbeing raised to disconnect the stop q from the head g, so-that thelatch-bolt can be projected' by its spring hto the position shown infig; 2 to change orireverse the latch-bolt and make -it a right orl'efthand latch; and I make the stopy q as a double incline, and alsoform the upper part of the head g as an incline, so that the simple actof forcing in the latch-bolt, after being changed or set as desired,raises the arm o and allows the parts to resume the position shown inlig. l.

ont of the lock whenthe same is being reversed, Vand become a guide fordirecting the head g'back into place between the arm o and projection n.

I claim as my. invention- The reversible latch with the shank f passingbetween the stops t and carrying the swivel-head g, in combination withthe arm o and projection n on ,the plate an, the parts being constructedand arranged substantially as specified. p l Signed by me this 18th dayof February, A. D. 1871.

IV. T. MUN GER.

Witnesses CHARLES Puck, EDWD. L. PRIOR.

head g within its recess in the saddle-plate m,'so that friction of theshank f in sliding through the plate efrr.Ihe head-g and stops t preventthe latch being taken

